<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        // es5
    var name="mengyan";
    var age=21;  
    var mengyan={
        name:name,
        age:age,
    }
    // es6中倘若对象的属性名和值相同可以简写
    var mengyan={
        name,
        age
    }  
    </script>
</body>
</html>